<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../vue.js"></script>
</head>

<body>
  <div id="app">
    <div style="width: 100px;height: 100px;background:green"></div>
    <div :style="styleObj"></div>
    <div :style="styleArr"></div>
    <div style="width: 100px;height: 100px;"  :style="{background:bgColor}"></div>
  </div>
  <script>
    Vue.config.productionTip = false;
    
    const vm = new Vue({
      el: "#app",
      data() {
        return {
          styleObj:{
            width:'100px',
            height:'100px',
            background:'red'
          },
          styleArr:[
            {width:'150px'},
            {height:'150px'},
            {background:'blue'}
          ],
          bgColor:'pink'
        }
      }
    })
  </script>
</body>

</html>